Abstract:
:The aims of the present study were to characterize sperm quality and to quantify seasonal changes in sexual hormone (testosterone [T], 11-ketotestosterone [11-KT] and 17,20β-dihydroxypregn-4-en-3-one [17,20β-P]) levels in male brill (Scophthalmus rhombus) plasma, as well as to test a more intensive sampling strategy to establish relationships between sex steroid levels and sperm production parameters. Sperm concentration ranged from 0.5 to 3.1 × 10(9) spermatozoa mL(-1), and changes in sperm quality parameters depending on sampling date were observed. Plasma sexual steroid levels remained high and changed in parallel during the spawning season and afterwards decreased to very low levels in summer. The analysis of annual changes of 11-KT and T ratios suggests that 11-KT can be the main circulating androgen for stimulating spermatogenesis in S. rhombus and that T could be involved in the beginning of spermatogenesis through the positive feedback on brain-pituitary-gonad axis. Finally, daily 11-KT and T levels showed similar patterns of variation in males sampled, whereas 17,20β-P amounts showed somewhat opposite trends. These differences could be related with the different role of androgens and progestin during the spermatogenesis.
journal_name
Fish Physiol Biochemjournal_title
Fish physiology and biochemistryauthors
Hachero-Cruzado I,Forniés A,Herrera M,Mancera JM,Martínez-Rodríguez Gdoi
10.1007/s10695-012-9692-3subject
Has Abstractpub_date
2013-04-01 00:00:00pages
215-20issue
2eissn
0920-1742issn
1573-5168journal_volume
39pub_type
杂志文章abstract::Animal and/or plant protein sources substituting fishmeal in the diets keep being developed due to its high price. The purpose of this study is to determine response of dietary substitution of fishmeal with silkworm pupae meal, promate meal®, meat and bone meal and/or their combination on the performance of juvenile o...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-011-9555-3
更新日期:2012-06-01 00:00:00
abstract::Pituitary gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), play fundamental roles in vertebrate ovarian development and function. However, there has been an increasing body of evidence that the actions of FSH and LH are mediated or modulated by a variety of locally produced peptide or pr...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-006-0026-1
更新日期:2005-04-01 00:00:00
abstract::Aryl hydrocarbon receptor (AhR) agonists are known to cause lethal cardiovascular deformities in fish after developmental exposure. Acute adult fish toxicity of AhR agonists is thought to be minimal, but limited evidence suggests sublethal effects may also involve the cardiac system in fish. In the present study, adul...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-014-9982-z
更新日期:2015-02-01 00:00:00
abstract::The yellow catfish Pelteobagrus fulvidraco with initial average weight 16.6 ± 0.17 g were fed three extruded diets for 56 days. Fish meal (FM) diet was formulated as the normal control with 380 g FM and 200 g soybean meal (SBM) kg-1 diet. The SBM diet was prepared with 220 g FM and 360 g SBM kg-1 diet without Lys or M...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10695-017-0437-1
更新日期:2018-02-01 00:00:00
abstract::Monitoring the growth of salmon during their early marine phase provides insights into prey availability, and growth rates may be linked to risks of size-dependent mortality. However, the measurement of growth rate is challenging for free-living salmon in the ocean. Insulin-like growth factor (IGF)-I is a growth-promo...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-019-00681-y
更新日期:2019-12-01 00:00:00
abstract::Juvenile sea bass, 1.5 years old, of mixed sex, held on long photoperiods were fed early on the photoperiod and late on the photoperiod, using different diets. Fish fed natural diets showed a daily rhythmicity of plasma insulin, liver c-AMP, plasma glucose, liver glycogen and muscle glycogen content, however, fish fed...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF01874796
更新日期:1988-10-01 00:00:00
abstract::Goldfish,Carassius auratus, were acclimated for 2 to 3.5 weeks to three temperature regimes: [1] temporally-constant (10, 20 and 30°C), [2] diurnally-cycling (20 ± 10°C) and [3] randomly-fluctuating (± 2°C at approximately 2h intervals between extremes of 10 and 30°C). No significant differences in hematocrit were evi...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004327
更新日期:1994-12-01 00:00:00
abstract::The activities of trypsin (EC 3.4.21.4), chymotrypsin (EC 3.4.21.1), lipase (EC 3.1.1.3) and amylase (EC 3.2.1.1) were measured in different regions of the alimentary tract of ammocoetes from each of the three extant lamprey families. In the southern hemisphere speciesGeotria australis (Geotriidae), and even more part...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004649
更新日期:1992-05-01 00:00:00
abstract::Histo- and immunohistochemical techniques have recently been used to study the fibre type and myosin expression in fish muscle during development. In the present work, embryonic, larval and adult myosin isozymes (heavy and light chains) and parvalbumin isotypes were analyzed, from fertization to the adult stage, by po...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004524
更新日期:1992-08-01 00:00:00
abstract::Measurable in vitro hepatic monodeiodinase activity of the southern hemisphere lamprey, Geotria australis, was present only during the first 5 of the 16 month upstream spawning migration of this species. The production of T3 from T4 in vitro was pH-sensitive, and exhibited typical Michaelis-Menton kinetics. No consist...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00003372
更新日期:1990-09-01 00:00:00
abstract::The analysis of the tench growth hormone gene structure revealed a comparable organization of coding and non-coding regions than other from cyprinid species. Based on the performed mRNA and amino acid sequence alignments, gh tench is related to Asian than to European representatives of Cyprinidae family. Second aim of...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-012-9661-x
更新日期:2012-12-01 00:00:00
abstract::The growth of cyanobacteria (blue-green algae) is a typical phenomenon in water bodies worldwide. The use of silver carp (Hypophthalmichthys molitrix) to reduce excessive phytoplankton development is controversial. In the case of cyanobacteria, many of which are toxic, understanding their possible digestion mechanism ...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-019-00751-1
更新日期:2020-04-01 00:00:00
abstract::The rate of oxygen consumption of minced whole body was determined volumetrically, as an indication of metabolic rate in vitro (M in vitro ), at 20°C in porgy Pagrus major ranging from 0.0002 g (just after hatch) to 2.9 g (67 days old) in body mass. A triphasic relationship was found between M in vitro of individual f...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004511
更新日期:1992-10-01 00:00:00
abstract::An embryonic stem (ES)-like cell culture system RESC from a commercially important freshwater carp, Labeo rohita, was developed using blastula stage embryos. The cells were cultured in Leibovitz-15 (L-15) medium in gelatin-coated cell culture flask supplemented with 15 % fetal bovine serum along with 10 ng ml(-1) basi...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-012-9674-5
更新日期:2012-12-01 00:00:00
abstract::Iron is one the most abundant metals on the earth being essential for living organisms even though its free form can be toxic. The overload of this metal may be related with some disorders, like Alzheimer and Parkinson diseases, and hemochromatosis in the liver. The aim of the present study was to evaluate the effects...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-010-9459-7
更新日期:2011-09-01 00:00:00
abstract::A 2 × 2 × 2 factorial experiment was conducted to delineate the main effect of water soaking of plant ingredients, phytase, cellulase, and their interactions on the growth and digestive enzyme activities of Labeo rohita fingerlings. Two basal diets were prepared using water-soaked (S) or unsoaked (US) plant-based ingr...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-011-9511-2
更新日期:2012-04-01 00:00:00
abstract::The biological activities of lamprey GnRH and analogs were determined in the adult male lamprey,Petromyzon marinus. Two successive injections of lamprey GnRH at 0.005, 0.065 or 0.163 μg/g body weight or [D-Ala(6),Pro(9)-NHEt] mammal GnRH at 0.05 μg/g stimulated plasma estradiol and progesterone levels in adult male la...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004695
更新日期:1989-06-01 00:00:00
abstract::The current study was conducted to investigate the effect of ExcelMOS® in enhancing the immune system of Sparus aurata broodstock and their impact on offspring health through displaying the maternal transfer of immunity. Broodstock were divided into two groups: one was injected intraperitoneally with ExcelMOS® 1 month...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-018-0517-x
更新日期:2018-08-01 00:00:00
abstract::The glucose-regulated protein, 94 kDa (GRP94), is an endoplasmic reticulum (ER)-localized heat shock protein that plays among other functions a crucial role in folding and exports of Toll-like receptors (TLRs) and some other immune-relevant factors. We identified two copies of the GRP94-encoding gene in rainbow trout ...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-014-9979-7
更新日期:2014-12-01 00:00:00
abstract::Concentration, ability to motility, motility during the second activation (reactivation), and endogenous respiration were studied in sperm from two experimental groups of carp males. Group 1 was maintained for 7 days at 15 degrees C (cold water (CW) group), whereas the second group was subjected to a temperature of 20...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-008-9292-4
更新日期:2009-11-01 00:00:00
abstract::Muscle tissues contribute 34-48 % of the total body mass in fish. Proteomic analysis enables better understanding of the skeletal muscle physiology and metabolism. A proteome map reflects the general fingerprinting of the fish species and has the potential to identify novel proteins which could serve as biomarkers for...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-015-0046-9
更新日期:2015-06-01 00:00:00
abstract::The oxidative status is associated with animal lifespan, metabolism, activity and circadian rhythms. The objective of this work is to study the time course of the oxidative status over a daily cycle in the plasma, liver and brain, and the changes in the plasma cortisol levels of sturgeon and trout. The knowledge of da...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-017-0356-1
更新日期:2017-08-01 00:00:00
abstract::Histone deacetylase 4 (HDAC4) is an important modifier enzyme for chromatin remodeling and plays an essential role in regulating gene expression. Spatio-temporal expression spectrum revealed that zebrafish hdac4 mRNA, ubiquitously distributed in various tissues, were significantly higher at 36 hpf (hours post-fertiliz...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-011-9540-x
更新日期:2012-04-01 00:00:00
abstract::Cells from a relatively stenohaline marine species, turbot (Scophthalmus maximus) (TF) and an anadromous species, Atlantic salmon (AS) were cultured in media supplemented with NaCl to produce OPs varying from 300 to 500 mOsm kg(-1) and the direct effects of OP (salinity) on the fatty acid compositions of the main glyc...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00002456
更新日期:1995-04-01 00:00:00
abstract::Post mortem storage is a necessary process for removal of pin bones without destruction of fillets, thereby avoiding volume and economic loss. However, the enzymes involved in loosening pin bones during storage have not been studied to a great extent. In this study, the activities and localization of MMPs in the conne...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-016-0264-9
更新日期:2017-02-01 00:00:00
abstract::The regulation of the interrenal of teleostean fishes is reviewed from the perspective of non-classical control mechanisms and new evidence is presented suggesting gonadotropic control of the interrenal. Cortisol secretion by the interrenal, in addition to regulation by ACTH, appears to be mediated by other hormones. ...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF00004715
更新日期:1989-06-01 00:00:00
abstract::The stress response transmitted by the HPA axis is one of the best examples of neuroendocrine-immune interactions that are critical for survival. Analogous to the situation in mammals, the stress response in fish is characterized by the activation of the hypothalamo-pituitary-interrenal axis (HPI). Effects of cortisol...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-015-0084-3
更新日期:2015-10-01 00:00:00
abstract::The aim of the present study was to explore the effect of waterborne zinc (control, 0.85, 2.20, 3.10 mg/l, respectively) exposure on lipid deposition and metabolism in the hepatopancreas and muscle of grass carp Ctenopharyngodon idella. The lipid content, Zn accumulation, and the activities and expression levels of se...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-016-0200-z
更新日期:2016-08-01 00:00:00
abstract::Annual plasma insulin and glucose cycles were studied inDicentrarchus labrax maintained in either seawater (37.8‰) or brackish water (3.5‰). In both media, the highest insulin levels were found during the prespawning period (August-November) coincident to increases in weight and a decrease in plasma glucose. During sp...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/BF02110880
更新日期:1987-10-01 00:00:00
abstract::This study was conducted to characterize the alterations in reduced glutathione (GSH) level, catalase (CAT) activity and proteins electrophoretic patterns in response to sublethal copper (Cu) exposure in Cyprinus carpio and to determine whether these responses are related to Cu accumulation in gills, chosen as target ...
journal_title:Fish physiology and biochemistry
pub_type: 杂志文章
doi:10.1007/s10695-010-9380-0
更新日期:2010-12-01 00:00:00